How can I successfully install and import the "adafruit_servokit" python library using Ubuntu?

Question

I am trying to control motors using the PCF9685 Servo Controller on the Jetson Nano. When I try to run

from adafruit_servokit import ServoKit

I get the error

ModuleNotFoundError: No module named 'adafruit_servokit'

I ran

sudo pip3 install adafruit-circuitpython-servokit

but this did not help; specifically, I get an error when it reaches

collecting Adafruit-Blinka - No matching distribution found for Adafruit-Blinka>=7.0.0 (from adafruit-circuitpython-servokit)

I have also tried installing Adafruit-Blinka separately using

sudo pip3 install Adafruit-Blinka

which appeared to have run successfully; however, I'm still getting the above error.